6kv slip ring motor
Protection level：IP23
Voltage range：3000V±5%,3300V±5%,6000V±5%,6600V±5%,10000V±5%,11000V±5%
Power range：200-5600 kW
Application：hoist, rolling mill, wire drawing machine.
Advantage：low noise, small vibration, reliable performance, easy installation and maintenance.
Standard: This series of products complies with JB/T10314.1-2002 and JB/T7594 standards.
Others： SKF, NSK, FAG bearings can be replaced according to customer requirements.
- Product Description
Premium 6kV Slip Ring Motor Solutions for Heavy-Duty Industrial Applications
The 6kv slip ring motor represents a proven solution for mining hoists, rolling mills, and other demanding applications where reliable performance under extreme loads is non-negotiable. With over two decades of industry experience, our YR-HV series delivers the power density and control flexibility your operation requires. These wound rotor machines enable smooth acceleration with limited grid impact while handling frequent start-stop cycles that would overwhelm standard designs.
6kv Slip Ring Motor Manufacturer and Supplier
Shaanxi Qihe Xicheng Electromechanical Equipment Co., Ltd. specializes in high-voltage power solutions for critical industrial processes. For more than 20 years, we've maintained strategic partnerships with over 30 leading motor manufacturers including ABB, Siemens, Wolong, and XEMC. Our YR-HV series wound rotor motors cover voltage ranges from 3kV to 11kV with power outputs spanning 200-5600 kW. Every unit ships with comprehensive documentation and support backed by CCC, CE, ISO9001:2000, and railway CRCC certifications.
Pain Points vs. Solutions
Challenge: Grid voltage sags during heavy equipment startup damage sensitive systems and trigger production shutdowns.
Our Solution: External rotor resistors limit inrush current to 150-200% of rated values—far below the 600-800% spikes from direct-on-line starting.
Challenge: Conveyors and mills require full torque at zero speed for loaded starts.
Our Solution: Rotor resistance insertion delivers 250%+ starting torque, enabling direct full-load engagement without auxiliary drives.
Challenge: Variable processes need speed adjustment without costly frequency converters.
Our Solution: Stepped speed control through rotor resistance changes provides economical regulation for applications not requiring precision.
Challenge: Repetitive impact loads cause premature motor failures.
Our Solution: Robust wound rotor construction withstands mechanical stress from shock loading that destroys cage rotors.
Technical Advantages
Our YR-HV series uses the premium quality electrical steel lamination to reduce core losses. The wound rotor design enables to monitor the currents in real-time and modify the circuit during operation, due to the accessibility of the slip rings. Class F insulating materials provide high-temperature stability which increases service life in hostile conditions.
Choose SKF, NSK or FAG bearings depending on your dependability needs. The IP23 rating offers a balance between the effectiveness of the ventilation and resistance to pollution. Modular terminal box layouts simplify field wiring and maintain voltage isolation regulations. Low noise operation (usually around 80 dB) allows adherence to occupational safety standards.
Manufacturing Process
Manufacturing starts with making copper rotors windings using continuous strand technique. The stator cores are annealed to relieve stresses and then precise windings are inserted. Following electrical assembly each motor is subjected to a high potential test of 2 x rated voltage + 1000V. Dynamic balancing to Grade A vibration levels (ISO norms).
Final testing comprises verifying no-load current, measuring locked-rotor torque, and validating temperature increase under simulated load circumstances. Our factory management system connected with SAP tracks each element from raw material to shipping documents.
Industry Applications
Mining: Mine 6kv slip ring motor hoists benefit from controlled acceleration that prevents cable shock loading during cage positioning.
Metallurgy: Rolling mill stands require instant torque response to maintain strip tension during gauge changes.
Cement: Ball mills and vertical raw mills utilize variable-speed capability to optimize grinding efficiency across different material hardnesses.
Ports: Heavy-duty cranes employ these motors for precise load handling with smooth starts that protect structural components.
Customization Capabilities
We adapt shaft dimensions, mounting configurations, and terminal arrangements to match your existing equipment interfaces. Voltage tolerances accommodate ±5% grid fluctuations standard across industrial networks. Special coatings protect windings in corrosive atmospheres or high-humidity environments.
Extended shaft lengths enable direct coupling to reducers without intermediate components. Braking resistor integration and thermal protection customization align with your control system architecture. Our engineering team reviews installation drawings to identify potential integration challenges before production.
Reliability Testing & Certifications
All units undergo temperature rise testing per IEC 60034 standards to verify thermal design margins. Insulation resistance measurements confirm moisture resistance meets IP23 requirements. Vibration sensors detect imbalances exceeding 2.8 mm/s RMS thresholds during spin testing. Our quality certifications include CCC, CE, ISO9001:2000, railway CRCC, and international standards compliance.
Why Choose XCMOTOR
Trusted Supply Chain: Direct access to original components from tier-one manufacturers ensures genuine quality.
Rapid Response: Dedicated support operates seven days weekly, addressing technical questions and after-sales issues promptly.
Flexible Terms: 30-day evaluation period with straightforward return processes protects your investment.
Logistics Expertise: Customized transportation solutions covering sea freight, land transport, air shipping, and multimodal combinations.
Application Engineering: Our team recommends specific brands, series, and models based on your actual load profiles rather than generic specifications.
FAQ
Q：What is YR series high voltage wound rotor motor?
A：YR series are 6kV/10kV three-phase wound rotor aSynchronous Motors equipped with slip rings and brushes. External resistors or speed control devices connect to the rotor circuit, making them ideal for high-power equipment requiring high starting torque with limited grid impact.
Q：What are the core advantages compared with squirrel cage motors?
A：Low starting current prevents grid voltage drops. High starting torque enables direct full-load startup. Stepped speed regulation via external resistors offers economical control. Suited for frequent start-stop cycles and impact loads. Liquid resistance starters enable ultra-smooth acceleration.
Q：Which industries use YR high voltage wound rotor motors?
A：Mining hoists, ball mills, vertical raw mills, belt conveyors, metallurgical rolling mills, and port lifting equipment. Not recommended for constant-speed applications like standard fans or pumps.
Q：Why do slip rings spark during operation?
A：Common causes include carbon buildup on rings, insufficient brush spring pressure, worn brushes needing replacement, loose external resistance connections, or contamination reducing conductivity.
Q：What maintenance does this motor require?
A：Regular slip ring cleaning and polishing, periodic bearing lubrication, annual insulation resistance testing, rotor resistance cabinet inspection, slip ring chamber sealing checks, and high-voltage terminal tightening.
Contact Us
Ready to specify the right 6kv slip ring motor for your application? Reach us at XCMOTORs@163.com with your power requirements, duty cycle details, and installation constraints.
